Mpire Shopping Companion – browser plugin for instant price checks

The free Mpire Shopping Companion provides an instant price comparison in your browser window while you’re doing online shopping. It’s available as a plugin for Firefox or IE7 and actually works as advertised. Of course it doesn’t handle every store or every product, but it’s still a pretty neat way of checking around to see whether you’re getting the best bargain. How long before online stores start blocking it, I wonder?

While shopping your favorite online stores, the Mpire shopping companion gives you automatic alerts if someone is selling the same product for less, real-time price trend graphs, coupons, and price promotions. All for FREE. * Automatic alerts if someone is selling the same product for less * Find out how much to pay wherever you shop * Get instant access to smart coupons and promotions * Hundreds of sites supported